If you're replying to qompiler, than I'm quite sure that it is more than reasonable to use "it's" as a contraction for "it is". Happy to be corrected here, but

If you're replying to qompiler, than I'm quite sure that it is more than reasonable to use "it's" as a contraction for "it is". Happy to be corrected here, but this is my understanding based on the use observed.